**Proponent:** 12wWLUd5qMzLFGqBsMnHLVFeTuYJwuo5ygMAxuSywrBX1XSF

**Date:** 21.10.2022

**Requested DOT:** ($172,500) ~27,080 DOT

**Contact:** Frederik Gartenmeister (frederik@centrifuge.io)

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This is Polkadot treasury proposal by **Centrifuge** to fund the development of FUDGE (FUlly Decoupled Generic Environment for substrate-based chains) . FUDGE provides a simple and generic way to interact with and manipulate the database of a substrate-based blockchain. This includes building and importing blocks locally without any kind of network or consensus, as also changing existing state and finalizing it without the need of forging a new block.

The currently most obvious use-case for FUDGE are local integration tests as the library drastically reduces time and overhead for these. But the library is furthermore useful as a core building block around clis in the Substrate ecosystem. E.g. a cli for forking-off a database of a node, tooling around analysing a chain in various states (i.e. at variaous blocks).

There already exists a PoC version of the library ([https://github.com/centrifuge/fudge](https://github.com/centrifuge/fudge)) and the library is actively used by the Centrifuge team for integration tests ([https://github.com/centrifuge/centrifuge-chain/tree/main/runtime/integration-tests](https://github.com/centrifuge/centrifuge-chain/tree/main/runtime/integration-tests)).

The full proposal can be found here: [https://centrifuge.hackmd.io/@rxJQ-iCrT9eYElX4L2WMmA/BkMfLwPli](https://centrifuge.hackmd.io/@rxJQ-iCrT9eYElX4L2WMmA/BkMfLwPli)

- Centrifuge is proposing a project called FUDGE for Polkadot.
- FUDGE helps with interacting and manipulating the database of a blockchain.
- It can be used for local integration tests and building tools for analyzing a chain.
- There is already a PoC version of FUDGE available.
- The full proposal can be found at the provided link.

#1351 Treasury Proposal by Centrifuge: FUDGE - Core library for local integration-tests in Substrate